Pioneer CDX-FM653 Service Manual page 48

Universal multi-cd system
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CDX-FM653
- Pin Functions (PD6294A)
Pin No.
Pin Name
1
VSS
2
X1
3
X0
rst
4
5,6
MODE1,0
7
GRN/amb
8
SO
9
SI
remin
10
11
RVER
12
NC
13–16
KDT4-1
17–22
KST6-1
23
VCC
24–73
SEG49-0
74–77
COM3-0
78–80
V3-1
*PD6294A
21
40
48
I/O
Function and Operation
GND
Crystal oscillator connection pin
Crystal oscillator connection pin
I
System reset
GND
O
GREEN/AMBER select output
O
UART output
I
UART output
I
Remote control signal input
Not used
Not used
I
Key data input
O
Key strobe output
5V
O
LCD segment output
O
Common driver output
LCD bias power supply
80
61

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